The significance of the von Karman curve lies in better reducing the air resistance and the influence of load. Von Carmen is an American master of engineering mechanics and a pioneer of space technology theory. 188 1 may 1 1 was born in Budapest, Hungary. 1902 graduated from Joseph Royal University of Technology. 65438-0904 entered the University of G? ttingen, Germany for further study, and 65438-0908 received his doctorate. Under the guidance of Prandtl, the father of aerodynamics, he completed the aerodynamic experiments, studied the phenomenon of boundary layer separation, and put forward the famous "Carmen Vortex Street" theory. 1926 clarifies and establishes the concept of "turbulence". 1938 instructed Qian Xuesen and others to set up a rocket research group, which later developed into a world-famous jet propulsion laboratory of California Institute of Technology. 1944 led the establishment of a scientific advisory group to create conditions for rocket technology research.

The head of the von Karman curve is not flat when unfolded. Von Carmen made a great contribution to human supersonic flight. After 1932, many papers and research results on supersonic flight were published, and the supersonic drag of slender body in three-dimensional flow field was calculated for the first time by using small disturbance linearization theory, and the concept of shock resistance in supersonic flow and the important point that reducing relative thickness can reduce shock resistance were put forward. 194 1 published a famous formula for calculating the wing pressure distribution in high-speed flight-"Carmen Qian Xuesen's formula", that is, von Carmen corrected the wing pressure distribution in subsonic airflow by applying the viewpoint of Qian Xuesen in 1939. 1946, von Carmen proposed the transonic similarity law, which combined with Pelant's subsonic similarity law, Qian Xuesen's hypersonic similarity law and acle's supersonic similarity law to form a complete basic theoretical system of compressible aerodynamics. In the same year, he delivered an important speech entitled "Theory and Application of Supersonic Aerodynamics" at the 10 Wright Brothers Memorial Lecture, announcing that the supersonic era was coming. 19471June14th, the X 1 rocket plane designed by von Carmen finally broke through the sound barrier for the first time, bringing mankind into the era of supersonic flight.